13200381 has 16 divisors (see below), whose sum is σ = 20707200. Its totient is φ = 8282304.

The previous prime is 13200359. The next prime is 13200409. The reversal of 13200381 is 18300231.

It is not a de Polignac number, because 13200381 - 2¹³ = 13192189 is a prime.

It is a super-2 number, since 2×13200381² = 348500117090322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13200311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13921 + ... + 14838.

It is an arithmetic number, because the mean of its divisors is an integer number (1294200).

Almost surely, 2^13200381 is an apocalyptic number.

It is an amenable number.

13200381 is a deficient number, since it is larger than the sum of its proper divisors (7506819).

13200381 is a wasteful number, since it uses less digits than its factorization.

13200381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28785 (or 28779 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 13200381 is about 3633.2328579380. The cubic root of 13200381 is about 236.3354238830.

The spelling of 13200381 in words is "thirteen million, two hundred thousand, three hundred eighty-one".